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| # RUN: llc -o - %s -mtriple=thumbv7-- -run-pass=stack-protector -run-pass=prologepilog | FileCheck %s
---
# This should trigger an emergency spill in the register scavenger because the
# frame offset into the large argument is too large.
# CHECK-LABEL: name: func0
# CHECK: t2STRi12 killed [[SPILLED:\$r[0-9]+]], $sp, 0, 14, $noreg :: (store 4 into %stack.0)
# CHECK: [[SPILLED]] = t2ADDri killed $sp, 4096, 14, $noreg, $noreg
# CHECK: $sp = t2LDRi12 killed [[SPILLED]], 40, 14, $noreg :: (load 4)
# CHECK: [[SPILLED]] = t2LDRi12 $sp, 0, 14, $noreg :: (load 4 from %stack.0)
name: func0
tracksRegLiveness: true
fixedStack:
- { id: 0, offset: 4084, size: 4, alignment: 4, isImmutable: true,
isAliased: false }
- { id: 1, offset: -12, size: 4096, alignment: 4, isImmutable: false,
isAliased: false }
body: |
bb.0:
$r0 = IMPLICIT_DEF
$r1 = IMPLICIT_DEF
$r2 = IMPLICIT_DEF
$r3 = IMPLICIT_DEF
$r4 = IMPLICIT_DEF
$r5 = IMPLICIT_DEF
$r6 = IMPLICIT_DEF
$r7 = IMPLICIT_DEF
$r8 = IMPLICIT_DEF
$r9 = IMPLICIT_DEF
$r10 = IMPLICIT_DEF
$r11 = IMPLICIT_DEF
$r12 = IMPLICIT_DEF
$lr = IMPLICIT_DEF
$sp = t2LDRi12 %fixed-stack.0, 0, 14, $noreg :: (load 4)
KILL $r0
KILL $r1
KILL $r2
KILL $r3
KILL $r4
KILL $r5
KILL $r6
KILL $r7
KILL $r8
KILL $r9
KILL $r10
KILL $r11
KILL $r12
KILL $lr
...
---
# This should not trigger an emergency spill yet.
# CHECK-LABEL: name: func1
# CHECK-NOT: t2STRi12
# CHECK-NOT: t2ADDri
# CHECK: $r11 = t2LDRi12 $sp, 4092, 14, $noreg :: (load 4)
# CHECK-NOT: t2LDRi12
name: func1
tracksRegLiveness: true
fixedStack:
- { id: 0, offset: 4044, size: 4, alignment: 4, isImmutable: true,
isAliased: false }
- { id: 1, offset: -12, size: 4056, alignment: 4, isImmutable: false,
isAliased: false }
body: |
bb.0:
$r0 = IMPLICIT_DEF
$r1 = IMPLICIT_DEF
$r2 = IMPLICIT_DEF
$r3 = IMPLICIT_DEF
$r4 = IMPLICIT_DEF
$r5 = IMPLICIT_DEF
$r6 = IMPLICIT_DEF
$r8 = IMPLICIT_DEF
$r9 = IMPLICIT_DEF
$r10 = IMPLICIT_DEF
$r11 = IMPLICIT_DEF
$r12 = IMPLICIT_DEF
$lr = IMPLICIT_DEF
$r11 = t2LDRi12 %fixed-stack.0, 0, 14, $noreg :: (load 4)
KILL $r0
KILL $r1
KILL $r2
KILL $r3
KILL $r4
KILL $r5
KILL $r6
KILL $r8
KILL $r9
KILL $r10
KILL $r11
KILL $r12
KILL $lr
...
|